That specific claim prompted a flurry negative replies on Twitter — including some from doctors.

"1) Homeopathy is bulls---. 2) This claim is bulls---. 3). @goop is bulls---," tweeted @DocBastard, a trauma and general surgeon who contributes to The Daily Beast. "You are an embarrassment to logic, reason, and science. Delete your account."

Other responses were just as pointed.

A few Twitter users from "countries outside of the United States" chimed in, too.

The tweet isn't new. A Twitter search shows that Goop published tweets with same exact wording in March 2017 and again in July. The July tweet received more than 600 largely negative replies. The November version of the tweet was deleted after racking up nearly 300 replies.

Homeopathy traces back to 18th-century German physician Samuel Hahnemann, Business Insider reports. His theory was that you could cure an ailment by taking extremely diluted doses of the thing that is causing that ailment. For example, if onions give you a runny nose, you can use onions to treat allergies.

Doctors and scientists have long considered homeopathy to be bogus. The scientific evidence supports their stance.

In its article, however, Goop doesn't mention the lack of evidence to support homeopathy. It also provides no evidence to back up its claim about homeopathy being patients' "first line of defense" in "most countries" outside the US. INSIDER reached out to Goop for comment, but did not hear back immediately.

Sign up here to get INSIDER's favorite stories straight to your inbox.